PSS | Portable Sample System

Specifically designed to precondition pressurised gas samples for dewpoint measurement, our PSS is the ideal sample system for the SADPmini2, SADPmini2-L and SADPmini2-Ex Dewpoint Hygrometers.

The PSS ensures optimal sample conditioning for accurate dewpoint measurements and a versatile solution for trace moisture analysis in various applications, including hazardous areas.

Whether for intermittent use or spot checks, the PSS offers a reliable, lightweight solution for accurate dewpoint measurement in any field condition. The system comes equipped with an integrated pressure regulator and flow indicator, allowing for precise control over sample flow and pressure, and a padded carrying case, ensuring protection and ease of transport to any site.

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Category: Sample Systems

Whatever the challenge — Alpha Moisture Systems has you covered.

Highly customised solutions
Trusted by industry leaders
Distributors worldwide
Over 30 years experience

Engineered for practicality and efficiency

Key features

Compatible with SADPmini2, SADPmini2-L and SADPmini2-Ex dewpoint hygrometers
Safe for use in hazardous areas when paired with the SADPmini2-Ex, the PSS features no stored energy components or potential ignition sources
Supplied with either a needle valve or pressure regulator to finely adjust the sample inlet pressure according to specific requirements
An optional particulate filter is available for cleaner sample analysis, ensuring the integrity of measurements
Options include push-on quick connectors, stainless steel braided hoses with quick connectors, and ¼” and ⅛” compression fittings
The chassis is made from durable powder-coated stainless steel, with all pipework and fittings crafted from 316 high-grade stainless steel
Easy connection and operation allow rapid and accurate dewpoint measurements, streamlining the process for field technicians

Technical Data

General
Sensor/Transmitter Type	Compatible with SADPmini2 range
Safety	No stored energy components or any possible source of ignition; therefore, it can safely be used, with SADPmini2-Ex or SADPmini-Ex, in hazardous environments
Accessories	High-quality anti-static padded vinyl carrying case
Documentation	Instruction manual
Sensor
Approvals	CE, UKCA
Sample Flow Rate	0-20 L/min
Mechanical
Dimensions in mm (H x W x D)	270 x 315 x 245
Weight	With instrument: 5.2 kg, Without instrument: 3.75 kg
Operating Pressure	Pressure Regulator 200barg Max
Fittings	Choice of quick connect ¼”, ⅛” or 6 mm compression fittings
Mechanical Warranty	12 months in case of defective parts or faulty workmanship
Enclosure/Body	Powder coated steel
Probe Material (Wetted Parts)	316 stainless steel

Downloads

PSS - Portal Sample System User Manual (PDF)

PSS - Portable Sample System Datasheet (PDF)

What's in the box

PSS Sample System

PSS Sample System Manual

Applications

AerospacePortable dewpoint meters are crucial in the production of aeronautical parts requiring vacuum furnace heat treatment with very dry argon, and for verifying the dryness of welding shield gas at the torch head according to NADCAP standards.

Breathing AirIn diving, firefighting, and defence applications, portable dewpoint meters are used to test high-pressure cylinder breathing apparatus to prevent equipment freeze caused by excess moisture, which could have fatal consequences.

Food PackagingPortable dewpoint meters are employed to conduct rapid spot checks of trace moisture levels, helping extend the shelf life of foods by reducing waste and carbon footprint through the use of dry gas in packaging.

HDPE ProductionUtilised for spot-checking moisture in flammable gases like ethylene feedstock, portable dewpoint meters ensure safety and efficiency in the production of polyethylene to avoid decreased yields caused by excessive moisture.

Injection MouldingPortable dewpoint meters are used to verify the dryness of air circulating through plastic pellets, improving surface finish, colour, and opacity of products — increasing yields and reducing production costs.

Medical GasesEssential for ensuring the reliability and accuracy of moisture content in hospital air systems, portable dewpoint meters help conduct continuous monitoring and quarterly spot checks to prevent microbial growth and potential infection — meeting NHS HTM02 standards.

Natural Gas and LNGPortable dewpoint meters are vital for preventing freezing issues in pipelines and valves, and preserving gas calorific value by accurately measuring moisture during transit from extraction to storage.

Natural Gas TransferBy identifying moisture ingress in gas distribution networks, portable dewpoint meters ensure the reliability of domestic gas appliances by facilitating rapid problem identification and resolution.

PharmaceuticalsPortable dewpoint meters are crucial for spot checks on inert blanketing gases in medication and medical device production, preventing microbial growth and ensuring the dryness necessary for freeze-drying processes.

Power GenerationFor routine spot checks on hydrogen used in alternator cooling, portable dewpoint meters help maintain efficiency and safety by ensuring moisture is below critical levels to avoid condensation.

SF₆ Circuit BreakersPortable dewpoint meters help avoid excess moisture — a potential cause of arcing which decomposes SF₆ into corrosive products, taking the switch out of service and interrupting the power to the distribution network.

Speciality GasesPortable dewpoint meters facilitate accurate moisture measurements in calibration gases, minimising the valuable product expended during the test process and ensuring compliance with specifications.

Frequently Asked QuestionsIf you have a question that’s not answered below, please contact us

What benefits does the Alpha Moisture Systems Portable Sample System offer for sampling with the SADPmini2 dewpoint meter?

The Portable Sample System (PSS) is engineered to condition pressurised gas samples up to 200 barg, ensuring optimal flow with a flow indicator and prolonging the life of the dewpoint sensor and meter by capturing particle contaminants through its filter unit.

What comes as standard with the PSS kit?

Can the PSS be used across various industrial environments?

How does the PSS ensure accurate and reliable dewpoint measurements?

To obtain accurate measurements, attach your SADPmini2 or SADPmini2-Ex meter to the PSS, connect a sample line to the PSS inlet, adjust the pressure regulator for a flow of approximately eight litres per minute, and check indicator scale for confirmation. The gas/air passes through a filter before reaching the sensor in the meter. Purge the system for a few minutes. Place a finger over the outlet of the PSS to raise the desiccant head. The sensor is now measuring the dewpoint. When the display has settled, take a reading.

What are the advantages of using a portable sample system over direct sampling methods?

Using a portable sample system enhances efficiency, reduces dryer use and energy costs, and facilitates instant data logging and verification of readings. It allows for the monitoring of multiple systems and spot-checking in various locations throughout a plant’s compressed air system, offering convenience and accessibility. The PSS is also safe for use in hazardous environments with the SADPmini2-Ex intrinsically safe dewpoint hygrometer.